File Descriptions:

1. "mm.dd.yyyy.pdf": These are the original MUSL Mega Millions draw reports that hold the national sales data, among other things. The naming convention indicates the draw date for the data in the report. There are 254 of these files from October 31, 2017 until April 3, 2020.

2. all_states_jtj.xlsx: This file has all the sales data in the MUSL reports parsed and ready for data analysis. Here are the explanations of the columns: "state" is the American state; "date" is the draw date; "old_standard" is the Base sales as reported in the MUSL report; "old_megaplier" is the Megaplier sales as reported in the MUSL report; "jtj" is the Just the Jackpot sales as reported in the MUSL report; "standard" gives only those sales that are Base, as old_standard also includes the megaplier sales that are not the $1 megaplier add-on; "megaplier" gives entire megaplier sales, as old_megaplier only gives the $1 add-on amount and not the $3 megaplier purchase; "jackpot" is the advertised jackpot amount; "cash" is the immediate cashout amount of the jackpot.

3. NY_megamillions_megaplier_jtj.xlsx: This file is the raw data of NY Mega Millions sales from January 1, 2010 until January 25, 2022. Here are the explanations of the columns: "date" is the draw date; "ny_standard" is the dollar amount of Base sales; "jtj" is the dollar amount of Just the Jackpot sales; "ny_megaplier" is the dollar amount of Megaplier sales; "jackpot" is the advertised jackpot amount.

4. simulations_megamillions.xlsm: This file has the simulations for the "Risky Choice Models" section in the web appendix that are also used to generate Tables W1 and W3. Detailed instructions on how to replicate the simulations and results are provided in the "instructions" tab of the file.

5. wrwm_parameters.xlsx: This file has the parameter predictions of the WRWM model for each of the 8 jackpots. Column titles are three characters long. These are just copied over from the simulation results in the "yes_wrwm" tab in the simulations_megamillions.xlsm file. The first character denotes the Mega Millions play type, either "s" for Base, "m" for Megaplier, or "j" for Just the Jackpot. The second character is the parameter type, either "u" for the utility parameter or "w" for the winner regret parameter. The third character is a number from 1 to 8 representing the 8 jackpots in ascending order, 1 being the smallest of $40 million and 8 the largest of $1 billion.

6. megamillions_jtj_code.do: This is the stata code used to generate Figures 3 and 4 in the main text, as well as Table W4 and Figure W1 in the web appendix, and the numerical calculations mentioned in the "Financial Constraints" and "Status Quo Bias" sections in the web appendix.